SMALL-SIZE ULTRASONIC DISTANCE METER Russian patent published in 2020 - IPC G01S15/00 

FIELD: physics.

SUBSTANCE: invention can be used for ultrasonic distance measurement. Essence of the invention lies in the fact that the multidimensional ultrasonic distance meter consists of a microcontroller, an analogue-to-digital converter, two band-pass filters, a unit for temporary automatic gain control, a digital-to-analogue converter, a controlled voltage source, a power amplifier driver, an input amplifier, a power amplifier, a receive-transmit switch, a power stabilizer, a receive-transmit interface and an acoustic sensor, microcontroller outputs are connected to inputs of digital-to-analogue converter, controlled voltage source, power amplifier driver and receiving-transmission interface, outputs of controlled voltage source and power amplifier driver are connected to inputs of power amplifier, power amplifier output is connected to the input of the receiving-transmission switch, the outputs of the switch are connected to the inputs of the input amplifier and the acoustic sensor, the output of the acoustic sensor is connected to the input of the transmit-receive switch, the output of the input amplifier is connected to the input of the first band-pass filter, outputs of the first band-pass filter and the digital-to-analogue converter are connected to the inputs of the temporary automatic gain control unit, the output of the temporary automatic gain control unit is connected to the input of the second band-pass filter, output of the second band-pass filter is connected to the input of the analogue-to-digital converter, the output of the analogue-to-digital converter is connected to the input of the microcontroller, wherein the probing pulse used is a signal with linear-frequency modulation, all functional units of the meter are located in a single housing, and operation of the meter is performed according to the embedded algorithm without operator participation.

EFFECT: technical result is enabling creation of compact, noise-immune and autonomous ultrasonic distance meter.

1 cl, 1 dwg